Balance-weight.



No. 863,637. PATENTED AUG. 20, 1907,

G. E. POPE.

BALANCE WEIGHT.

APPLICATION FILED JUNE 11, 1906.

5 9532;. by QM, Q

Attys.

1H2 NORRIS PETERS ca, WASHINGTON, D c. I

CHARLES E. POPE, OF PITTSBURG, PENNSYLVANIA.

BALANCE-WEIGHT.

Specification of Letters Patent.

Patented Aug. 20, 1907.

Application filed June 11,1906. Serial No- 321,135.

To all whom it may concern:

- Be it known that I, OHAnLEs E. POPE, a citizen of the United States,and a resident of Pittsburg, county of Allegheny, State of Pennsylvania,have invented certain new and useful Improvements in Balance- Weights,of which the following is a specification.

My invention relates to tubular balance weights such as are commonlyused to counter-poise window sashes, and for similar purposes. Itsobject is to produce a weight which shall be of substantially the samespecific gravity as the ordinary cast iron weight, but of smootherexterior surface, and less frangible, as well as more economicalinmanufacture.

In the drawings, Figure 1 is an elevation of the sash weight embodyingmy invention. Fig'. 2 is a view partly in section and partly inelevation at a right angle to the view shown in Fig. 1. Fig. 3 is apartial ele vation showing the upper end of the weight during theprocess of manufacture.

To make a sash weight according to the present invention I take a pieceof wrought iron or steel tubing 10 of the proper length and diameter forthe required weight, the ends 11 and 12 of the tube being cut offpreferably at right angles with its axis. I then draw or stamp fromwrought metal a head or upper end 13 for the tube, the shoulder portionof which is of a diameter corresponding to the bottom of the tube sothat its edge 15 will abut against the edge 11 of the tube.

The head 13 is formed with an indrawn portion 14, which I afterwardflatten, as shown in Figs. 1 and 2, so that its walls are closedtogether for a substantial portion of their length. Through this closedflattened portion of the head 14 I pierce an aperture 16 for thereception of a supporting cord or chain. I also draw or stamp fromwrought metal a bottom shell 17 the vertical walls 18 of which are ofthe same diameter as the tube body 10 and so as to abut thereagainst.One of the end closures,

' preferably the head 13, is then welded on one end of the tube body 10,preferably by the electric welding process. The tube is then solidlyfilled with a heavy filling material 19, which may be iron ore dust,pulverized scale or heavy cinder. The closure 17 is then welded on tothe lower end of the tube, which completes the weight. Any projectingfins produced by the welding process may be ground off in the well knownmanner. It will be seen that when made in this manner both ends of thetube are absolutely closed. The exterior of the weight has thesmoothness of the wrought iron or steel tube from which it is made, thetube is of the same diameter for its entire effective length without anyprojecting shoulders, and the weight of the finished counterpoise is, asabove stated, substantially equal to that of cast iron. The head beingof wrought metal and welded to the body of the tube cannot be broken offwith the roughest handling. In addition, the hole 16 for the cord beingpierced and preferably tapered, as shown, affords a smooth easy passagefor the cord, in which respect it is much superior to the holes usuallymade in cast iron weights, which are apt to fill with sand or slag whichmust be chipped out before the cord can be placed therein, leaving roughedges which are apt to cut or chafe the cord.

I have filed of even date herewith, Serial Nos. 321,132; 321,133 and321,134, other applications for balance weights formed with wroughttubular bodies, and showing different methods of closing the upper andlower ends thereof. As these closures of the upper and lower ends areindependent of each other, it is obvious that they are to a certainextent interchangeable, that is, the indrawn head of the presentapplication might be used with the form of bottom ClOSlll'G shown ineither of the other applications.

It is of course obvious that I do not herein claim anything claimed inany of said applications.

What I claim is:

1. A balance weight comprising a tubular wrought body, an indrawntransversely pierced head welded thereon, a closed bottom, anda heavyfiller.

2. A balance weight comprising a tubular wrought body, a bottom weldedthereon, an indrawn closed transversely pierced head, and a heavyfiller.

3. A balance weight comprising a tubular wrought body, end closureswelded thereon, one of such closures being indrawn and transverselyperforated, and a heavy filler,

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

CHARLES E. POPE.

Witnesses:

JOHN F. KRAFT, JAMES S. DOUTHITT.

